| buckled aorta | Distortion, often with slight narrowing, of the aortic arch at the level of insertion of the ligamentum arteriosum. Synonym: buckled aorta, kinked aorta. (05 Mar 2000) |
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| buckler | 1. A kind of shield, of various shapes and sizes, worn on one of the arms (usually the left) for protecting the front of the body. In the sword and buckler play of the Middle Ages in England, the buckler was a small shield, used, not to cover the body, but to stop or parry blows. 2. <zoology> One of the large, bony, external plates found on many ganoid fishes. The anterior segment of the shell of trilobites. 3. A block of wood or plate of iron made to fit a hawse hole, or the circular opening in a half-port, to prevent water from entering when the vessel pitches. Blind buckler, a solid buckler. <botany> Buckler mustard, a buckler with a hole for the passage of a cable. Origin: OE. Bocler, OF. Bocler, F. Bouclier, a shield with a boss, from OF. Bocle, boucle, boss. See Buckle. Source: Websters Dictionary (01 Mar 1998) |
| buckminsterfullerene | <chemistry> A hollow, spherical molecule consisting of 60 carbon atoms arranged in a soccer ball pattern of hexagons and pentagons. The molecule can superconduct, lubricate, and absorb light. The molecule is a type of fullerene, was the first one to be discovered and studied, and is named after the architect R. Buckminster Fuller. Synonym: bucky ball. (15 Nov 1997) |
| buckram | 1. A coarse cloth of linen or hemp, stiffened with size or glue, used in garments to keep them in the form intended, and for wrappers to cover merchandise. Buckram was formerly a very different material from that now known by the name. It was used for wearing apparel, etc. 2. <botany> A plant. See Ramson. Origin: OE. Bokeram, bougeren, OF. Boqueran, F. Bougran, MHG. Buckeram, LL. Buchiranus, boquerannus, fr. MHG. Boc, G. Bock, goat (as being made of goat's hair), or fr. F. Bouracan, by transposing the letter r. See Buck, Barracan. Source: Websters Dictionary (01 Mar 1998) |
| buckskin | 1. The skin of a buck. 2. A soft strong leather, usually yellowish or grayish in colour, made of deerskin. 3. A person clothed in buckskin, particularly an American soldier of the Revolutionary war. "Cornwallis fought as lang's he dought, An' did the buckskins claw, man." (Burns) 4. Breeches made of buckskin. "I have alluded to his buckskin." (Thackeray) Source: Websters Dictionary (01 Mar 1998) |
| buckthorn | <botany> A genus (Rhamnus) of shrubs or trees. The shorter branches of some species terminate in long spines or thorns. See Rhamnus. Sea buckthorn, a plant of the genus Hippophae. Source: Websters Dictionary (01 Mar 1998) |
| buckthorn polyneuropathy | Ascending polyneuropathy resulting from ingestion of the fruit of Karwinskia humboldtiana. (05 Mar 2000) |
| buckwheat | 1. <botany> A plant (Fagopyrum esculentum) of the Polygonum family, the seed of which is used for food. 2. The triangular seed used, when ground, for griddle cakes, etc. Origin: Buck a beech tree + wheat; akin to D. Boekweit, G. Buchweizen. Source: Websters Dictionary (01 Mar 1998) |
| Bucky diaphragm | In radiography, a diaphragm with a moving grid that avoids grid shadows. Synonym: Potter-Bucky diaphragm. (05 Mar 2000) |
| Bucky, Gustav | <person> U.S. Radiologist, 1880-1963. See: Bucky diaphragm. (05 Mar 2000) |
| bucladesine | <chemical> N-(1-oxobutyl)adenosine cyclic 3',5'-(hydrogen phosphate) 2'-butanoate. A cyclic nucleotide derivative that mimics the action of endogenous cyclic AMP and is capable of permeating the cell membrane. It has vasodilator properties and is used as a cardiac stimulant. Chemical name: Adenosine, N-(1-oxobutyl)-, cyclic 3',5'-(hydrogen phosphate) 2'-butanoate (12 Dec 1998) |
| buclizine hydrochloride | 1-(p-tert-Butylbenzyl)-4-(p-phenylbenzyl)piperazine dihydrochloride;a mild sedative used for motion sickness, vertigo, and anxiety accompanying psychosomatic disorders. (05 Mar 2000) |
| buclosamide | N-Butyl-4-chlorosalicylamide;a topical antifungal agent. (05 Mar 2000) |
| bucrylate | <chemical> 2-cyano-2-propenoic acid 2-methylpropyl ester. Cyanoacrylate tissue adhesive also used to occlude blood vessels supplying neoplastic or other diseased tissue. Pharmacological action: tissue adhesives. Chemical name: 2-Propenoic acid, 2-cyano-, 2-methylpropyl ester (12 Dec 1998) |
| Bucy | Paul C., U.S. Neurosurgeon, 1904-1992. See: Kluver-Bucy syndrome. (05 Mar 2000) |